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Beijing has sent its coast guard into the maritime area of the Senkaku islands and military drones past remote Japanese territory as China ramps up strains following the Japan's leader's remarks regarding the island of Taiwan.

Rights Enforcement Activities

This past Sunday, the Chinese coast guard announced that its ships carried out a “lawful patrol operation” through the territorial seas of the Diaoyu islands, which are administered by Tokyo but also asserted as territory by Beijing.

“China coast guard vessel 1307 formation conducted patrols within the maritime jurisdiction of the Diaoyu islands. This was a lawful patrol operation conducted by the Chinese maritime authorities to protect its sovereign claims,” the statement said.

Diplomatic Spat

Beijing and Tokyo have consistently clashed around the islands but the recent developments occur during an intensifying diplomatic spat after the Japanese prime minister, Sanae Takaichi, told parliament that if China attack the self-governing island of Taiwan it could trigger a military response from Japan.

That sparked an angry response from China, which has signalled it expects a withdrawal from the Japanese official.

Taiwan's Position

China claims the island as its own territory and plans to incorporate it under what it describes as “unification”. It has not ruled out the military option. The island's administration and citizens overwhelmingly reject the prospect of Chinese rule – preferring to maintain the status quo without formally announcing independence, but pledging to protect their sovereignty if required.

An attack or invasion by China would risk escalating into a international confrontation, possibly drawing in the US and other partner nations including Japan, which has territory just 68 miles from Taiwan.

Military Activity

In Taiwan, the military authorities said on Sunday morning that it had detected three dozen PLA planes, multiple naval vessels and one “official” ship, which was likely the coast guard, active near the island over the past 24 hours.

Official charts released showed up to multiple UAVs flying between Taiwan and the Japanese islands off its northeastern shoreline, seeming to travel unusually near to Yonaguni. Chinese military transits there are not rare, but infrequent, and Chinese military activity in Taiwan’s air defence identification zone generally has been minimal in recent weeks.

Late on Saturday, the defense officials said China had been conducting another “joint combat patrol” to “harass the airspace and sea around us”. It noted the island had dispatched military assets to monitor the situation. Taiwan reports such Chinese patrols a couple of times a month as part of what Taipei says is an ongoing military pressure campaign.

Political Strain

Japan has been experiencing increased strain from China since Takaichi made her comments, with Beijing's diplomatic representative in the Japanese city triggering an official complaint from Tokyo by stating that “the dirty head that sticks itself out must be cut off”.

Beijing then summoned the Japanese ambassador for the first occasion since 2023, and Beijing's military authorities declared that any Japanese intervention would be doomed to fail.

Travel and Education Advisory

On Friday, Beijing cautioned its citizens against travelling to Japan, prompting Tokyo to urge Beijing to take “suitable actions”, though it did not elaborate.

Three Chinese airlines announced this weekend that flights to Tokyo could be cancelled without penalty.

Adding to the tensions, Beijing's administration on Sunday urged its citizens to “carefully reconsider” studying in Japan, citing what it characterized as an unstable security environment.

Although not an outright prohibition, a dramatic reduction in the number of Chinese students could have a negative impact on Japanese universities. A historic high of over 336,000 international students were studying in Japan last year, according to official data. They featured over 123,000 learners from China – by far the single biggest group.

Official Commentary

Late on Saturday, a official press commentary accused Takaichi of staging a political stunt that was “both reckless and fundamentally flawed”.

“A conflict between Japan and China would not be a small-scale encounter; it would probably involve other nations, including the US, and could quickly spiral into a major confrontation with unimaginable consequences.”

Policy Standpoints

The government of Taiwan says the island's residents alone determine their destiny. Japanese leaders have traditionally refrained from publicly mentioning Taiwan when addressing potential conflicts, maintaining a “deliberate vagueness” also favoured by Tokyo’s main security ally, the United States.

Nevertheless, Beijing's governing party says the unification of Taiwan with the People’s Republic of China is “unavoidable”, and portrays dissent as provocative. As it advances toward potential armed takeover, China has also been increasing its political operations and its statements towards Taiwan.